This is Utech USB to RS-232 interface adapter cable. No external power supply needed. Compatible with USB and RS-232 standards. It is capable to perform the conversion from single-ended USB signal into UART signal of RS-232. A DB25 male connector is used for connection from an RS-232 interface. The unique I/O circuit of the internal zero delay auto transceiver contained in the converter controls the data stream direction automatically. The converter is plug-and-play. This cable will work for computer USB to a CNC using XON/XOFF software handshaking. RTS and CTS signals are jumped out. It works with most of Fanuc and Mitsubishi based CNC controls.

More Features:
*The TXD/RXD traffic is indicated by two LEDs(red/green) over-molded in the USB clear case.
*Industry Standard FTDI chipset & device drivers to ensure maximum compatibility and superior reliability for industrial application
*Heavy duty metal DB25 connector with locking screws on one end, transparent plastic USB housing on the other end of the cable with LEDs indicating data traffic.

It is an ideal solution for a computer to communicate with many serial devices directly through USB port such as CNC, plotter, modem, Scanner etc.

This product is designed to make a connection between USB port and serial devices(RS232), not a parallel printer or other devices based on parallel protocol(IEEE-1284), even though both have a DB25 connector. Check your devices setup prior to purchase.

Works with USB 1.1 & 2.0 Host and Hub ports. Powered directly by USB port, no external power adapter required.